scholarly journals Severe Enoral Bleeding with a Direct Oral Anticoagulant after Tooth Extraction and Heparin Bridging Treatment

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Simone Ehrhard ◽  
John Patrik Burkhard ◽  
Aristomenis K. Exadaktylos ◽  
Thomas C. Sauter
Keyword(s):  
Tooth Extraction ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Invasive Procedure ◽  
Low Molecular Weight ◽  
Case Presentation ◽  
Acute Bleeding ◽  
Local Surgery ◽  
Number Of Patients ◽  
The Individual

Background. The number of patients receiving direct oral anticoagulants (DOACs) is increasing, however, this treatment is associated with the risk of bleeding. More than 10 percent of patients on DOACs have to interrupt their anticoagulation for an invasive procedure every year. For this reason, the correct management of DOACs in the perioperative setting is mandatory. Case Presentation. An 81-year-old male patient, with known impaired renal function, presented to our emergency department with a severe enoral bleeding after tooth extraction. The DOAC therapy—indicated by known atrial fibrillation—was interrupted perioperatively and bridged with Low Molecular Weight Heparin (LMWH). The acute bleeding was stopped by local surgery. The factors contributing to the bleeding complication were bridging of DOAC treatment, together with prolonged drug action in chronic kidney disease. Conclusion. In order to decide whether it is necessary to stop DOAC medication for tooth extraction, it is important to carefully weigh up the individual risks of bleeding and thrombosis. If DOAC therapy is interrupted, bridging should be reserved for thromboembolic high-risk situations. Particular caution is required in patients with impaired kidney function, due to the risk of accumulation and prolonged anticoagulant effect of both DOACs and LMWH.

Effect of Antithrombotic Therapy on Secondary Bleeding After Proctological Surgery

2020 ◽  
Author(s):  
Ryo Maemoto ◽  
Shingo Tsujinaka ◽  
Yasuyuki Miyakura ◽  
Erika Machida ◽  
Nao Kakizawa ◽  
...  
Keyword(s):  
Antithrombotic Therapy ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Individual Risk ◽  
Bleeding Rate ◽  
Secondary Bleeding ◽  
Number Of Patients ◽  
Anticoagulant Drugs ◽  
The Individual ◽  
Median Interval

Abstract Background: The purpose of this study was to identify the incidence and severity of secondary bleeding after proctological surgery for patients with or without antithrombotic therapy.Methods: We retrospectively identified 113 patients who underwent proctological surgery in our hospital from March 2009 to February 2019. In general, antiplatelet drugs were continued and anticoagulant drugs were either substituted or withdrawn prior to the surgery. The severity of secondary bleeding was classified as mild, moderate, severe.Results: Eighteen patients underwent antiplatelet therapy (A group) and 95 patients did not undergo antithrombotic therapy (N group). Secondary bleeding was observed in nine patients (8.0%) and patients in the A group exhibited significantly higher rate of secondary bleeding rate than patients in the N group (39% vs. 2.4%, P < 0.01). The median interval from surgery to the onset of secondary bleeding was 5 (range: 0-11days). The severity of bleeding was the highest in patients administered direct oral anticoagulants (DOAC) and was the lowest in those administered aspirin. There was no mortality or cardiovascular event.Conclusions: Antithrombotic therapy is associated with high risk of secondary bleeding after proctological surgery, particularly in patients who undergo anticoagulant therapy. Delaying of postoperative resumption of anticoagulants may be considered in balancing the individual risk of postoperative thromboembolic complications against the risk of secondary bleeding. Future prospective studies with larger number of patients are needed to determine the appropriate timing of resuming antithrombotic therapy.

How I treat and prevent venous thrombotic complications in patients with lymphoma

Blood ◽  
2021 ◽  
Author(s):  
Robert A Schmidt ◽  
Agnes YY Lee
Keyword(s):  
Trial Design ◽  
Randomized Trials ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Low Molecular Weight ◽  
Common Complication ◽  
Low Molecular Weight Heparins ◽  
Relative Risks ◽  
Thrombotic Complications ◽  
The Individual

Venous thromboembolism (VTE) is a common complication occurring in 5-10% of patients with lymphoma. As the complexity of lymphoma management has increased with novel therapies, so too has the treatment of VTE. Therapeutic options for the treatment of cancer-associated VTE have expanded from only warfarin and low-molecular-weight heparins (LMWHs) to include the direct oral anticoagulants (DOACs) apixaban, edoxaban and rivaroxaban. There have been no head-to-head trials comparing different DOACs in this setting and randomized trials comparing a DOAC with LMWH dalteparin differ in trial design and results. Drug-drug interactions, drug-specific side effects and patient selection are important considerations when prescribing anticoagulant therapy. In all patients, the relative risks of thrombosis and bleeding, the availability of the anticoagulant, and the life expectancy of the patient are vital elements in selecting the most appropriate anticoagulant (which can vary over time) for the individual patient. We describe the intricacies and challenges of treating thrombotic complications in patients with lymphoma with an emphasis on evidence and guideline-based care.

scholarly journals Safe chest tube placement in a patient with tension pneumothorax receiving rivaroxaban therapy for non-valvular atrial fibrillation

2020 ◽  
Vol 90 (2) ◽  
Author(s):  
Alessandro Cipriano ◽  
Matteo Parollo ◽  
Ester Taurino ◽  
Elena Venturi ◽  
Massimo Santini
Keyword(s):  
Vitamin K Antagonists ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Tension Pneumothorax ◽  
Invasive Procedure ◽  
Absolute Number ◽  
Tube Thoracostomy ◽  
Tube Placement ◽  
Bleeding Complications ◽  
Number Of Patients

The number of patients treated with direct oral anticoagulants is increasing worldwide. Although bleeding complications associated with direct oral anticoagulants are lower than those associated with vitamin K antagonists, the increased number of patients treated with these anticoagulants suggests that a higher absolute number of patients are at risk. Tube thoracostomy is an invasive procedure with a high risk of bleeding. To date, among direct oral anticoagulants, only dabigatran has a well-studied antidote to reverse its effects during emergency procedure or surgery. This report describes a case in which emergency placement of a tube thoracostomy, in a patient with type 2 respiratory failure due to left tension pneumothorax and receiving the anticoagulant rivaroxaban, in the pharmacokinetics phase with greater anticoagulant effect, did not result in bleeding greater than that typically encountered during such interventions. The procedure ended successfully with no acute complications.

scholarly journals Safety and efficacy of direct oral anticoagulants (DOACs) vs low molecular weight heparin (LMWH) in malignancy induced venous thromboembolism-a systematic review and meta analysis

2021 ◽  
Vol 10 (Supplement_1) ◽  
Author(s):  
A Abdul Razzack ◽  
N Hussain ◽  
S Adeel Hassan ◽  
S Mandava ◽  
F Yasmin ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Venous Thromboembolism ◽  
Major Bleeding ◽  
Low Molecular Weight Heparin ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Low Molecular Weight ◽  
Efficacy And Safety ◽  
Dichotomous Data ◽  
Significant Difference

Abstract Funding Acknowledgements Type of funding sources: None. Background- Low molecular weight heparin (LMWH) and direct oral anticoagulants (DOACs) have been proven to be more effective in the management of venous thromboembolism (MVTE). The efficacy and safety of LMWH or DOACs in treatment of recurrent or malignancy induced VTE is not studied in literature. Objective To compare the efficacy and safety of LMWH and  DOACs in the management of malignancy induced  VTE Methods- Electronic databases ( PubMed, Embase, Scopus, Cochrane) were searched from inception to November  28th, 2020. Dichotomous data was extracted for prevention of VTE and risk of major bleeding in patients taking either LMWH or DOACs. Unadjusted odds ratios (OR) were calculated from dichotomous data using Mantel Haenszel (M-H) random-effects with statistical significance to be considered if the confidence interval excludes 1 and p &lt; 0.05.  Results- Three studies with 2607 patients (DOACs n = 1301 ; LMWH n = 1306) were included in analysis. All the study population had active cancer of any kind diagnosed within the past 6 months. Average follow-up period for each trial was 6 months. Patients receiving DOACs have a lower odds of recurrence of MVTE as compared to LMWH( OR 1.56; 95% CI 1.17-2.09; P = 0.003, I2 = 0). There was no significant difference in major bleeding among patients receiving LMWH or DOACs  (OR-0.71, 95%CI 0.46-1.10, P = 0.13, I2 = 22%) (Figure 1). We had no publication bias in our results (Egger’s regression p &gt; 0.05). Conclusion- DOACs are superior to LMWH in prevention of MVTE and have similar major bleeding risk as that of LMWH. Abstract Figure. A)VTE Recurrence B)Major Bleeding events

P5239Cost-effectiveness of direct oral anticoagulants for cancer-associated venous thromboembolism

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
J King ◽  
S Bhat ◽  
L J Heath ◽  
C G Derington ◽  
Z Yu ◽  
...  
Keyword(s):  
Venous Thromboembolism ◽  
Cost Effectiveness ◽  
Relative Risk ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Cost Effective ◽  
Low Molecular Weight ◽  
Cost Effectiveness Ratio ◽  
Major Bleed ◽  
Recurrent Vte

Abstract Background Direct oral anticoagulants (DOACs) are at least as effective as low-molecular weight heparins (LMWH) at preventing recurrence after cancer-associated venous thromboembolism (CA-VTE). DOACs are also oral and far less costly, but they may confer a higher bleeding risk than LMWH. Purpose To estimate the cost-effectiveness of DOACs and LMWHs for CA-VTE. Methods We developed a health state transition model to estimate recurrent VTE, bleeding events, quality-adjusted life years (QALY), and direct healthcare costs (2018 United States dollars) associated with DOACs vs. LMWH use. The model had four states: (1) long-term anticoagulation (first 3 months after VTE), (2) extended anticoagulation (more than 3 months after VTE), (3) off anticoagulants, and (4) death. We used a United States healthcare sector perspective, 3-month cycle length, and 1-year time horizon. Event probabilities were derived from the Hokusai Cancer VTE trial and other literature. Event and medication costs were obtained from national sources. We used a threshold of less than $50,000 per QALY gained to define cost-effectiveness. Results Compared to LMWH, DOACs were less costly (mean costs: $8,477 vs. $33,917 per year) and similarly effective (mean QALY: 0.616 vs. 0.622). The incremental cost-effectiveness ratio was $4,479,374 per QALY gained with LMWH, indicating that DOACs are cost-effective (Table 1). In threshold analyses, LMWH therapy only became cost-effective when DOAC recurrent VTE risk increased to at least 72% (relative risk vs. LMWH, 6.19) or DOAC clinically relevant bleeding increased to at least 39% (relative risk vs. LMWH, 10.09). Scenarios Recurrent VTE, % Major bleed, % Mean difference DOAC − LMW ICER DOAC LMWH Relative Risk DOAC LMWH Relative Risk Cost QALY Base case 8.1 11.6 0.71 6.8 4.0 1.75 −$25,440 (−26,496, −24,274) −0.006 (−0.019, 0.008) $4,479,374 DOAC outcome rate threshold at which LMWH becomes cost-effective*   Recurrent VTE 71.5 11.7 6.19 – – – −$6,064 (−7,534, −4,627) −0.121 (−0.136, −0.108) $49,886   Major Bleed – – – 38.9 4.0 10.09 −$2,192 (−3,400, −704) −0.044 (−0.056, −0.030) $49,878 DOAC = direct oral anticoagulant, ICER = incremental cost-effectiveness ratio, LMWH = low-molecular-weight heparin, VTE = venous thromboembolism. Values are mean (95% Uncertainty Interval). Uncertainty was derived from 1,000 stochastic model iterations. *Represents the minimum increased risk with DOAC that would result in LMWH achieving an ICER <$50K per QALY gained. Conclusion In this simulation study, DOACs were a cost-effective oral alternative to LMWH for the treatment of CA-VTE. For LMWH to be cost-effective, DOAC event rates needed to be far higher than what is likely to be observed in clinical practice. Acknowledgement/Funding Agency for Health Research and Quality R18HS026156

Examination of the Effectiveness of Direct Oral Anticoagulants in Comparison to Warfarin in an Obese Population

2021 ◽  
pp. 875512252110641
Author(s):  
Rachel M. Watson ◽  
Carmen B. Smith ◽  
Erica F. Crannage ◽  
Laura M. Challen
Keyword(s):  
Primary Outcome ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Efficacy And Safety ◽  
Class Iii ◽  
Vein Thrombosis ◽  
Class Iii Obesity ◽  
Recurrent Vte ◽  
The Individual ◽  
Deep Vein

Background: While commonly prescribed today, direct oral anticoagulants (DOACs) have historically been avoided in patients with class III obesity or a weight >120 kg due to limited literature regarding the efficacy and safety in this population. Objective: The overall objective was to examine the effectiveness of DOACs compared to warfarin in a population with obesity. Methods: Patients with a diagnosis of venous thromboembolism (VTE) or atrial fibrillation and a body mass index (BMI) ≥35 kg/m2 from August 1, 2015, to August 1, 2020, were included in this retrospective cohort study. Patients receiving a DOAC were matched in a 1:2 ratio to warfarin. The primary outcome was a composite of stroke or recurrent VTE. Secondary outcomes included the individual components of the primary outcome, hospitalization for bleed, and the primary outcome in patients with a BMI ≥40 kg/m2. Results: A total of 162 patients were included, with 54 and 108 in the DOAC and warfarin groups, respectively. Baseline BMI was similar between groups (45.7 kg/m2 for DOACs vs 43.8 kg/m2 for warfarin), with approximately 70% of patients having a BMI ≥40 kg/m2. The primary outcome occurred in 1 patient (1.9%) in the DOAC group and 2 patients (1.9%) in the warfarin group. The DOAC group had a higher, nonsignificant incidence of bleeding (5.6% vs 0.9%, P = 0.11). There was no difference between groups in incidence of deep vein thrombosis (DVT), pulmonary embolism (PE), or stroke in patients with a BMI ≥40 kg/m2. Conclusion: DOACs may be as efficacious as warfarin in the prevention of stroke or recurrent VTE in patients with a BMI of ≥35 kg/m2. Prospective, randomized trials are warranted to further assess the efficacy and safety of DOACs in this population.

scholarly journals Cerebral Venous Thrombosis Case Series at a Tertiary Care Hospital: Exploring Treatment Safety and Efficacy of Direct Oral Anticoagulants

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 3658-3658
Author(s):  
Mohammed Abdullah Alsheef ◽  
Mukhtar Alomar ◽  
Abdul Rehman Z. Zaidi ◽  
Ghaydaa Juma Kullab ◽  
Mohammed AlHazzaa ◽  
...  
Keyword(s):  
Venous Thrombosis ◽  
Cerebral Venous Thrombosis ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Tertiary Care ◽  
Case Series ◽  
Case Report Form ◽  
Care Hospital ◽  
Safety And Efficacy ◽  
Number Of Patients

Background: Cerebral venous thrombosis (CVT) is an uncommon cause of stroke that mainly affects young adults and children. Initial treatment with heparin followed by wafarin is the mainstay of treatment. Only insufficient experience is available for direct oral anticoagulants (DOACs). Aims: The study aims to demonstrate the efficacy and safety of DOACs such as (Rivaroxaban and Dabigatran) in patients with objectively confirmed CVT. Methods: Data of 46 cases of CVT collected using a standardized case report form. Inclusion criteria were patients diagnosed with CVT, confirmed by CT or MRI imaging. Results: The total number of patients was 46 (9 males and 37 females). The mean age of the patients was 35.2± 5 years. The most common clinical manifestations among our patients were headache followed by seizure. 52% of cases were unprovoked, while 48% were provoked by pregnancy and oral contraceptive pills. Superior sagittal sinus (55%) and transverse sinus (44.9%) were the most common sites. Involvement of more than three venous sinuses was 34.8%. Thrombophilic abnormality was detected in 21.7% of patients. Initiation of anticoagulation (AC) was mostly low molecular weight heparin (LMWH) (80%), followed by unfractionated heparin (UFH) (17.7%) and fondaparinex (2%). Maintenance AC with Rivaroxaban after heparin (LMWH/UFH) was in 63% of our patients, the rest were switched from Warfarin to Rivaroxaban (34.8%), and one was treated by Dabigatran (2%). CVT recurrence was observed in one patient. Major bleeding (according to ISTH criteria) was not reported in our case series. Conclusions: DOACs demonstrated good safety and efficacy profile and can potentially replace warfarin in CVT patients. Disclosures No relevant conflicts of interest to declare.

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